Auscultation in Primary Care

Mid-Systolic Click Sounds

This is an auscultation example of a mid-systolic click heard at the mitral valve area.

The first and second heart sounds are normal . The second heart sound is unsplit and no murmur is present so that you can concentrate on the systolic click.

On the anatomy tab you can see that the mitral valve posterior leaflet prolapses. The mid-systolic click is produced by the sudden prolapse of the leaflet.

A mid-systolic click is often followed by a late systolic murmur of mitral valve leaflet prolapse.

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The recommended auscultation position for the stethoscope is the Mitral position. For this sound, use stethoscope's Diaphragm.

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The recommended patient position is Supine

Phonocardiogram

This waveform plots sound amplitude on the vertical axis against time on the horizontal axis.

Heart Animation

Lessons

1	First and Second Heart Sounds - Normal and Unsplit
2	First and Second Heart Sounds - Reduced Intensity
3	Second Heart Sound - Splitting
4	Third Heart Sound Gallop
5	Fourth Heart Sound Gallop
6	Third and Fourth Heart Sound Gallop
7	Summation Gallop at 120 beats per minute
8	Second Heart Sound - Fixed Splitting
9	Mid-Systolic Click
10	Mitral Valve Leaflet Prolapse
11	Aortic Stenosis (Diamond Shaped Systolic Murmur)
12	Aortic Regurgitation (Decrescendo Diastolic Murmur)
13	Mitral Regurgitation (pansystolic Murmur)
14	Mitral Stenosis (Diastolic Murmur)

Practice Drill

Listening Tips
A synopsis of important sound features and timing for this abnormality.
Systole: High pitched click.

CaseID	121
CourseID	31
CourseCaseOrder	9
ID	119